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Author Topic: No waves created by ships or boats  (Read 5884 times)

Mad_Fred

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Re: No waves created by ships or boats
« Reply #25 on: December 10, 2008, 23:00:16 »

Thanks for that link.

I am actually learning about waves in science right now, interesting stuff. :)


@ash

Yes it does, because of the propulsion system water moves from the bow of the vessel, to the stern of the vessel, thus pushing water to the stern, in a reverse direction of the direction the vessel is moving. A wake would move in the opposite direction the vessel's movement is in. If the vessel is at a heading of 001 the wake would be at a heading of 180.

(Boat moving N, wake moving S)

Not really, haven't you ever notice the wake's tendency to roll outwards on a diagonal path? Plus it rolls forward, due to the momentum, the water doesn't flow backwards, if you have sat on the shore and seen a ship go by, you see the wake roll in, not away.

It's not that straight forward, but depends on the shape of the ship aswell, and the speed it travels at, etc.
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ash

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Re: No waves created by ships or boats
« Reply #26 on: December 10, 2008, 23:01:48 »

Not really, haven't you ever notice the wake's tendency to roll outwards on a diagonal path? Plus it rolls forward, due to the momentum, the water doesn't flow backwards, if you have sat on the shore and seen a ship go by, you see the wake roll in, not away.

It's not that straight forward, but depends on the shape of the ship aswell, and the speed it travels at, etc.


you agree with me then?
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ash

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Re: No waves created by ships or boats
« Reply #27 on: December 10, 2008, 23:03:01 »

austin are we talking about the same thing here? we are talking about the waves that are produced by the boat are you talking about the foam from the boat?
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Mad_Fred

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Re: No waves created by ships or boats
« Reply #28 on: December 10, 2008, 23:04:39 »

Well to an extend, yes  :)

A wake is not as simple as "boat goes this way, wake goes the other way", that was just what I meant to say.



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ash

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Re: No waves created by ships or boats
« Reply #29 on: December 10, 2008, 23:06:29 »

so we are on the same lines?
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Jayshum

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Re: No waves created by ships or boats
« Reply #30 on: December 11, 2008, 00:22:38 »

As regards how VSTEP could get this into the game, I think it'd be very difficult. Firstly, it's swallow processing power. Secondly, there's no real point to it if we're honest, other than eye-candy (I hate that phrase, but it fit well there!). Thirdly, there's no (or very little) bump-mapping in the game at all, so to program that into the current engine, well I'd rather not imagine how unstable that'd be! I'd rather VSTEP concentrate on something else to be honest (bug fixing etc).

Just randomly, I've listed some games with water that reacts very well (not perfectly, but really convincing), below.
Halo 3, Gears of War 2, Kameo, GTA4 (although there's no foam-effect), Half-Life 2.
GTA4 is the only one with boats, and the way the water reacts isn't realistic, it's more artistic-license.

In my opinion, life-like looking, realistically-reacting wakes will be something that makes your jaw drop in 5 years time. As for the present, it'd require you to spend an obscene amount of money on a monstrously powerful PC.
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Agent|Austin

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Re: No waves created by ships or boats
« Reply #31 on: December 11, 2008, 01:57:54 »

@Jayshum

DC:AS also had 3D water with realistic wakes.
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Sam

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Re: No waves created by ships or boats
« Reply #32 on: December 11, 2008, 17:26:12 »

Waves for Dummies http://en.wikipedia.org/wiki/Wave (http://en.wikipedia.org/wiki/Wave)

AARGH, no!
All the formulas are comming back, I can't stand them anymore!
Just had a fysics exam last monday all about waves.

 ;) ;D
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RMS Canada

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Re: No waves created by ships or boats
« Reply #33 on: December 11, 2008, 18:03:48 »

He isn't talking about Wakes he's talking about Waves created by Ships  ;)

Thank You, Nathan C. 

To the people: this topic isn't about natural waves; it's about "man made waves", in other words, waves created by ships and boat during high speeds. 
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Agent|Austin

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Re: No waves created by ships or boats
« Reply #34 on: December 11, 2008, 20:03:00 »

Thank You, Nathan C. 

To the people: this topic isn't about natural waves; it's about "man made waves", in other words, waves created by ships and boat during high speeds. 
Also known as a WAKE.
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Mad_Fred

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Re: No waves created by ships or boats
« Reply #35 on: December 11, 2008, 20:09:51 »

 ;D

Now that everyone knows what everything is called, what was the point of all of this again?  ::)

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Sam

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Re: No waves created by ships or boats
« Reply #36 on: December 11, 2008, 20:12:21 »

during high speeds. 

Why? Ships make waves no matter what their speed is.

I think a bulkship going 12 knots makes bigger waves than a motoryacht going 35knots.
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Agent|Austin

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Re: No waves created by ships or boats
« Reply #37 on: December 11, 2008, 20:29:15 »

Why? Ships make waves no matter what their speed is.

I think a bulkship going 12 knots makes bigger waves than a motoryacht going 35knots.

http://www.youtube.com/watch?v=oVTDOiVLUk0&feature=PlayList&p=B7221A28DB8A1E79&index=13

You can kind of see here how the waves are 3D.

I'll get a video of the wake with 0 waves, it actually makes a 3D wake like mentioned. :)
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